Lets see if I follow this. Your going to put your body, no matter it's age, up to 28 feet in the air doing what ever it is you need to do.
Question is,
Do you worry about the strength and stability of the ladder the entire time your hanging your xxxx out on this limb?
Or, do you have a good strong, safe ladder that lets you do the jobs you need to do to the best of your talents.
At 68 years old and still hard headed enough to want to do my own work, I will climb my 350 lb rated 30ft fiberglass ladder and work comfortably. Now if I don't get really stupid and fall, then my wife still loves me. But if I screw up our next trip in the 5th wheel because I break something, MAIG. Fiberglass is strong, lasts forever if you take care of it, and you have a strong safe work platform. IMHO Most important is stay safe!!!